i can haz boost?

(tags game, Burnout, Xbox 360, failure)

I completed the Burnout Paradise at 100%, after finishing the boring Showtime, but its still not over yet. I know that there is one more thing that will give me the completely complete 101%. So I've been knocking on the known Achivements. One of them is to get a 20x boost run. 20x FSCKIN boost run. I can barely get 6x. I'm sorely tempted to look for the cheatin' knowledge but there are a couple of things I can try and some roads to master before I hit a Internet Search Engine.